Hook



Feb. 17. 1925. l 5 27 040 N. F. GARRISON HOOK Filed Aug. 24, 1923 INVENTOR Z 42 BY y WlTNESS: ATTORNEY Patented Feb. 1'], i225,

P AT E OFFICE.

HOOK.

Application filed August 24-, 1923.

T all whom it may concern:

Be it known that I, WILLIAM F. GABRI- SON, av citizen of the United States, residing at Alcova, in the county of Natrona and State of Wyoming, have invented new and useful Improvements in Hooks, of which the following is a specification.

The object of this invention is to produce a simple, cheaply constructed and thoroughly reliable lock hook for chains.

A further object is to produce a lock hook for chains in which the latch plate or lever is so arranged and influenced that the same cannot be accidentally opened regardless of pressure by the chain brought thereagainst.

To the attainment of the foregoing and other objects which will present themselves as the nature of the invention is better understood, reference is to be had to the draw ing which accompanies and which forms part of this application.

In the drawing Figure 1 is a side elevation of a chain hook in accordance with this invention.

Figure 2 is a top plan view thereof.

Figure 3 is a sectional view on the line 88 of Figure 2.

Figure 4 is an approximately similar sectional view but showing the latch plate or lever in release position.

By reference to the drawing, it will be seen that in constructing my improved chain hook I form the sides 1 thereof of two plates. The plates, adjacent to one of their ends are slotted from one of their edges downwardly and at a curvature to provide the said end of the plates with hooks 2. The body portion of the plates at the hooked ends thereof are preferably widened, but the free ends or beaks of the hook are arranged approximately in a line with one of the edges of the body plates. The ends of the hooks, that I have termed the beaks, are connected together by a pivot 3, a similar pivot a connecting the opposite ends of the pivots. The pivot 4- is extended beyond the sides of the plates and engages the eyes of a link 5.

Arranged between the plates, and secured thereto by the pivot i as well as by a rivet 6 there is a flat spring 7. The spring from its fixed end is gradually decreased in thickness and the inner face of the end thereof Serial No. 659,202.

which is arranged between the hooks is preferably concaved or rounded, as at 8.

Secured between the beaks of the hooks 2, by the pivot 3 is the latch plate or lever 9. The plate or lever 9 has its end outward of its pivot rounded to provide the same with a hook 10 designed to be normally arranged between the hooks 2, when the body or tail portion 11 of the said lever is received between the plates 2 and rests on the upper fixed edge of the spring 7. The end of the body or tail portion 11 of the lever is preferably pointed, as at 12, whereby a pointed instrument may be inserted between the plat-es to move the lever outward therefrom and to bring the hooked end of the lever to a release position with respect to the hooks of the body plates 1. The rounded outer edge of the lever, at the hooked end thereof is at all times engaged by the concaved portion 9 of the spring 7, and as this pressure is exerted upon the said hook of the lever to one side of the pivot 3 the accidental opening of the latching plate or lever will be positively prevented, it being absolutely necessary that the lever be opened by an instrument as above set forth. The spring not only holds the latching lever in its closed position, but likewise sustains the same open. When In open position the tail of the lever provides a guide for the link that is to be received between the hooks of the body plate and that of the lever. A pull on the chain will force the link against the hook of the lever to cause the same to swing to closed position, and it is thought that the foregoing description when taken in connection with the drawing will fully set forth the construction and advantages of the improvement to those skilled in the art to which this invention relates.

Having described the invention, I claim A chain hook made up of two spaced plates formed at one of their ends with an inwardly extending hook portion, a spring metal body between the plates having a thickened portion secured thereto whose outer face is below the plane of the plates, said body having av reduced curved extension forming an arched spring tongue which terminates between the hooked ends of the plates, a lever having an enlarged end p1votally secured between the beaks of the hooks, said lever at its said enlarged pivthereof being engaged by the spring tongue oted end having its outer edge rounded, when the lever is in closed position and 10 its inner edge flat and terminating in a 0011- when in such position the hooked portion of cavity providing a hook Whose inner Wall the lever Will align with the inner walls merges into the inner Wall of the lever, the provided by the hooked ends of the plates. rounded Wall of the lever being contact- In testimony whereof I affix my signature. able with the spring tongue when the lever is swung to closed position, and the flat Wall WILLIAM F. GARRISON. 

